Influence of Prosthetic Designs on Peri-Implant Bone in a Single Posterior Implant Supported Prosthesis: A 3 Dimensional Finite Element Analysis Gali Sivaranjani1, Basavaraj Neeraja2 1Associate Professor, Department of Prosthodontics, Faculty of Dental Sciences, M.S. Ramaiah University of Applied Sciences, Bangalore-560054 2Consultant Prosthodontist and Implantologist Department of Prosthodontics, Faculty of Dental Sciences, M.S. Ramaiah University of Applied Sciences, Bangalore-560054 *Corresponding Author E-mail: nature79gali@gmail.com
Online published on 24 January, 2020. Abstract Background Relationship between occlusal load and dental implant prognosis in particular, the peri implant bone is still in ambiguity. Such opacities have been attributed to difficulties in computing the occlusal forces and lack of precise indices to correlate occlusal load and implant failure Prosthetic rehabilitation involving dental implants comprises of cement or screw retained prosthesis retained on the abutment, which essentially become the first components to bear the occlusal forces. The prosthetic designs used in the present study are cement retained (CR), screw retained (SR) and a combination screw cement retained prosthesis (SCR). We intend to evaluate the influence of prosthetic designs particularly in single posterior metal ceramic molar crowns with finite element analysis, a popular computational tool to simulate masticatory loads on the various prosthetic design options so to predict stress in the peri implant bone. Peri implant bone around edentulous mandibular first molar was three-dimensionally modelled using Mimics software. Neo Biotech dental implant, abutments with abutment screws and models of SR, CR and SCR metal ceramic prosthesis were modelled three dimensionally using Solid Edge (2004) software. Numerical models of tetrahedral elements were generated with Hyper mesh Software. Static vertical load of 100N were applied on the central groove of the occlusal surface of the mandibular first molar crowns in all the three prosthetic designs. Results Increased stress seem to be occurring at the implant neck and maximum effective stress on the peri implant bone in the SR, CR and SCR prosthetic designs remain almost comparable, Conclusions Finite element analysis on prosthetic designs such as cement retained, screw retained and a combination screw cement retained prosthesis in a single posterior implant crowns demonstrate more stress at the implant neck presenting with no significant influence on peri implant bone. Top Keywords Dental Implant, Finite Element Analysis, Cement Retained Implant Prosthesis, Screw Retained Implant Prosthesis. Top |